Clinical trial Recruiting at 1 site Interventional Ages 6 to 12

Comparing probiotic and ethyl lauroyl arginate mouthwashes for lowering cavity‑causing bacteria and plaque in Egyptian schoolchildren

Official title: Comparative Evaluation of Probiotic-Based Versus Ethyl Lauroyl Arginate-Containing Mouthwashes on Streptococcus Mutans Counts, Dental Plaque Accumulation, and Salivary pH in a Group of Egyptian School Children: A Randomized Controlled Clinical Trial

Run by Al-Azhar University · NCT07356869 · Data updated 2026-11-12

This study will test whether a probiotic mouthwash or an ethyl lauroyl arginate mouthwash better lowers Streptococcus mutans, reduces dental plaque, and affects salivary pH in healthy Egyptian children aged 6–12.

Quick facts

Study typeInterventional
Ages6 Years to 12 Years
SexAll
Enrollment66 (estimated)
SponsorAl-Azhar University
Academic / other
Locations1 site (Cairo)
StatusRecruiting
StartedAugust 15, 2025
Main results expectedSeptember 1, 2026
Study endsSeptember 1, 2026
Registry record updatedJanuary 21, 2026
Trial IDNCT07356869 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Healthy Egyptian schoolchildren aged 6–12 with mild to moderate dental plaque and parent or caregiver consent are the ideal candidates.

Probably not a fit

Children who recently used antibiotics, have allergies to mouthwash ingredients, systemic diseases affecting oral health, orthodontic appliances, or large restorations are unlikely to benefit from the interventions tested.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

Children receive professional dental cleaning and are then assigned to use either a probiotic mouthwash or an ethyl lauroyl arginate (LAE) mouthwash over a defined follow-up period. Investigators measure Streptococcus mutans counts, dental plaque accumulation, and salivary pH at baseline and after treatment to compare effects. The trial is conducted at the Faculty of Dentistry, Al‑Azhar University, with eligibility limited to healthy schoolchildren who have mild to moderate plaque and parental consent. Participants with recent antibiotic use, allergies to mouthwash components, systemic disease, orthodontic appliances, or extensive restorations are excluded.

Why it matters

Potential benefit: If successful, the preferred mouthwash could lower levels of cavity‑causing bacteria and plaque and help reduce future caries risk in children.

How similar studies have gone: Prior research has shown that both LAE and some oral probiotics can reduce S. mutans counts and biofilm, though direct head‑to‑head comparisons in children are limited.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Healthy Egyptian schoolchildren aged 6-12 years.
* Good general health.
* Mild to moderate dental plaque accumulation.
* Parental/caregiver willingness to provide consent

Exclusion Criteria:

* Antibiotic or antimicrobial use within the last month.
* Allergies to the mouthwash components.
* Systemic diseases affecting oral health.
* Orthodontic appliances or extensive dental restorations.

Where it's running

  • Al-Azhar University (Faculty of Dentistry)
    Cairo, Egypt
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.